Sewing lasting-machine.



W. GORDON. SEWING LASTING MACHINE. APPLICATION FILED D110. 27, 1898.

Patented Feb. 16, 1909.

2 SHEETS-SHEET 1 ggg gggg- .IIE

37, rock the sleeve 27 about the shaft 28, and therefore rock the bell crank lever 24 sidewise and impart to the looper. a movement across the path of" oscillation of the needle, 5 and the cam path 31 in the cam 32 will rock the bell crank lever 24 about its fulcrum 26 and impart to the looper a movement toward and: from the needle. It will of course be understood that these movements of the sleeve 27 and bell crank lever 24 are timed with relation to each other so that the forward, and back and sidewise movements of the looper will take'place atthe proper times, so that when the needle isin its advanced position through the work, the loopel' will throw a loop of thread around the shank thereof.- -The yoke 34 of the arm 33 acts as a guide 01. the upper arm '30 of the bell crank lever 24 when the bell crank is swung about its pivot 26' and insures uniform rocking movements being imparted to the bell crank lever by the sleeve 27.

If'desired, the machine may be provided 7 with a suitable thread pulling device 38 carried by a lever 39 which is fulcrumed at 4Gto an overhanging arm 41 and which carries a cam roll 42 engaging a cam path 43 in a cam 44, which may be formed if desired integrally with the'cam 37, the arrangement be-- ing such that a rotation of the cam 44 will im art to the thread pu'llhigdevice 38 longi-' tudinal movements toward and from the front of the machine. 4 h In the present machine there is provided a. down-hold which is arranged accurately in position with relation to the path of oscilla- .tion of the needle, so that when the bottom of the sole of the shoe is in contact with the down-hold, the needle will enter and emerge from the work to the desired de th, or in lasting turn or welted shoes, the own-hold will so-position the surface of the Work with reference to the path of movement of the needle that the needle will properly enter and 45 emerge from the li or between substance. The down-hold whlch is illustrated in the drawing consists of a serrated roller 45 which is mounted to rotate freely on a-stud, carried in the lower end of an arm 46 adjustab-ly secured by means of bolts 47 and slots 48 to the .head of the machine to one side of the needle and referably in alinement with the axis 0 osci ation of the needle. The 'r'nachine comprises a suitable back- I )5 gage 49 which-is carried by the forward end of a slide 50 arranged to reciprocate in a suitable guideway 51. The baclegage is moved forward towards the down-hold by means of a spiral spring 51* which surrounds a rod'52 0 secured to the rear end of the slide 50, whichspring bears at one end against a head 53 secured to said rod, and atits o posite end against a fixed bearing 54 throng which the, rod i52-slides. .ln orderto retract the backgageagainst-the tension of the spring 51*- at l looper.

the time the machine is stopped, I have provided a lever 55 which at its lower end carformed on the front face of the cam 32. It

is desirable to lock the back-gage in its advanced position at the time the needle enters the work, and to secure this result there are v provided locking ,pawls or dogs 60, the lower ends of which are arranged to engage with teeth 61 formed on the upper edge of the. slide 50. 'Ihe pawls or dogs are forced down to engage the teeth 61 by means of springs 62. In order to raise the pawls 60 to permit the lever 55 to retract the back-gage 49, there is provided a lever 63 which is fulcrumed at 64, and which carries a bar 65 arranged to engage the pawls 60 and raise them against the tension of the springs 62. 'lhe lever 63 is rockedby means of'a face cam 66 formed on the front faceof the cam 19, which engages a cam roll 67 carried by the upper arm 68 of the lever 63. 7

69 represents a suitable thread waxing device from which the thread leads over a roller 70, thence under the thread pulling device38 and over a thread guiding:- truck 71 to. the

As before explained the rotations of the shaft 6 are'controlled by suitable fast and loose pulleys 7 and 8 and these fast and loose pulle. s are provided with, complemental clut faces,- arranged to be connected and disconnected, which may be formed in any manner suitable in such devices, to form a one-revolution clutch.v i

The opening and closing of the clutch is controlled by, an arm 72 which is fulcrumed at 73 to the rear of the-head 3 and said arm is provided with suitable connections with the clutch controlling devices, whereby as the arm 72 is rocked about'it's fulcrum 73, it will throw the clutch faces in contact to impart rotary motion to the shaft 6 and when the arm 72 is released and returned to its normal position, it will be in a position'to engage the clutch controlling devices after the machine has completed one cycle of movement to disconnect the clutch faces and stop the rotation of the shaft 6 and the operation of the machine, with all the parts of the machine in position to begin another stitch-forming operation.

r I have not deemed it necessary to describe 12o in detail the start and stop mechanism which comprises the one revolution clutch, and the controlling devices, as in and of themselves they form no ,art of the present invention, and any suitab e one-revolution clutch mechanism may be employed.

For tf. e purpo e of rocking the arm 72 about its fulcrum 73 to connect t e clutch facesvand-inlpart rotation to t' e shaft 6, the arm 72 is connected to-one side of its fulcrum 13o .order to stop the operation of the machine after it has completed one cycle of move- ,ment, and for this'purpose the treadle 7 is connected with a spring 78, the opposite end of which is connected to the standard 1 at 79,

,whereby after the operator has depressed ti: e

' treadle 75 against the tension of the spring 7 8, and has removed his foot from the footpiece 77, the spring 78'will immediately raise the treadle 75 and therefore the rod 74.

and return the arm 7 2 to its normal osition. As beforestated, the shoe to be asted'is supported 'ona suitable jack, which jack is arranged to befreely shifted and moved by then erator during the lasting operation, to ositionthe shoe with relation to the stitch orming mechanism, and locate the stitches at any desired point along the SliOG and, if desired, varying their number and distance from each other according as the work being done requires more or less stitches at any given section of the shoe being lasted. The jack sliown in the drawing comprises a pivoted heel support 89 and a toe support 81 fulcrumed at 82 for tlcc purpose of being ad-- justed toward and from t? 0 heel support 80 to accommodate lasts of varying. ength;

The keel support 80 and toe support 81 are mountedon a carriage 83 vwl-ich s arranged to be turned by t-e operator in suitable bearings ,84 projected froma base 85. Ti e base 85 is connected by means of a bolt Soto a sleeve 87' of'a'su'pport 88 pivotally secured at 89 to a sten190', The stem 90'at its lower end-is pivotally supported at 91 attfeforward-endo'f a lever 92 wt ich lever'is fulcrumed' at 93 to-a de ending'arm 94, and

which at its rear en provided with av weight 95.

Secured to the rear end of th clever 92 is a vertical -srod 96 wt ich'. passes u through a bearing 97 of the stan'dard l an which supports an adjustable arm 98 which is secured to one end of a spring 99, the opposite end ofthespring being secured to one of the legs 2 of the'standard 1; 4 Y The aboveiarrangement 84'provides for bringing al the 8 1 .06 beneath.- the action of t -c e stitch formingdevices; zTlseturnm of tlele'ad 85 -about its fulcrum 86 permits a sidewise s v to "accommodateforthe is'such t at a'last' being pro'perlyfmounted on t e'lzleel' and toe supports of y the jack, the carriagei83 'turnin vin itsbea parts of tie'lrregular contour of tlte sides of varying inclinations of the bottom of the last, so that all parts of the shoe may be properly brought under the action of the stitch forming devices. By means of the weight 95 and the spring 99, the jack and its standard is forced upward until the bottom of the last contacts with the'serrated roller 45, forming the-.down-hold of the machine and which positions the bottom of the last with reference to the path of oscillation of the needle. By adjusting the arm 98 along the rod 96, the tension of the spring 99 may be adjusted so as to augment the counterbalancing effect of the weight 95 and render the jack wl ich is quite heavy, easily manip ulated by tl'e operator. t is desiifole at times to maintain the jack in a depissed position against the tendency of the sprin 99 and the weiglzt 95, to raise the same, an

for this purpose I have provided a yoke 100 which is secured to the front of the machine and wliich embraces the standard 90 of the jack, and to tlte standard 90 is aiiined a stop 101, wl ich Wli en tlejackis depressed may be projected beneath a flange 102 formed on tlte inner surface of the yoke 100, and thus retain the jack in its depressed position against the tendency of the spring 99 and the weight 95 to raise t're same. v

It will be noted that the lasting machine time being at rest and with the parts in posil places his foot upon the treadle and causeslff tion to begin the stitch forming operation,

the machine to be operated to form a stitch" at the desired point in the work, and after such operation, the clutch devices stop the rotation of the shaft 8 with the parts in posi- .115

tion-to begin the formation of another stitch.

The operator may then drawup the upper of;

the shoe around the last taking the stretch out'and conformin the upper to thelast'at any-point around the shoe thereon which, he 120 desires, and shift the jack along to place-the shoe in position with relation tothe path of movement of the needle, for another stitch. It will. be understood, of course, that as the operator moves the work along from point to 125 point, such movement of the'work will act to draw the thread through the looper and from. the source of supply laying said thread along the surface of the work'from stitch to stitch.

- It is thought that the operation of the 193 s which has been described comprises no claim as new and desire to secure 'by Letters Patent of the United State's: I

A lasting machine, having, in combination, a fixed frame, stitch-forming mechanism mounted therein and operating automatically when thrown into operation to form a stitch at a predetermined point fixed with relation to said frame, means under the control of the operator for throwing the stitchforming mechanism into operation and. for

automatically throwing the stitch forming mechanism out of operation after the formation of a stitch, and a shoe supporting jack arran ed to allow the upper to be stretched over t e last While the stitch forming mechanism is out of operation and to be'freely moved by the operator with relation to the stitch-forming mechanism to locate the stitch es at such points and at such distances apart; around the'shce as the operator may desire, substantially as describe-l. In testimony whereof I sti k; my signature, in presence of two witnesses.

WILLIAIvi GORDON.

Witnesses:

T. HART ANDERSON, A. E. VVHYTE. 

